how much does it all cost? if you buy the whole lot, the 12 days of christmas, 25,431. a rise of just about 5%. now, as for the true cost because remember some of them you have to buy again and again. look at that. 107,000. a whopping rise. don't forget if you buy it online on the internet it's even more expensive because of shipping and handling. finally, the cost of buying christmas every year. just look at the way it just keeps getting more and more expensive. over all, when you put the 12 days together, the 12 days of christmas, you can see it's not a cheap business. you keep buying again and again and again. richard quest, cnn, london.